Connecting-rod



2 Sheets-Sheet 1.

'(No Model.)

A. POULSON.

CONNEGTING ROD.

Patented Aug. 7, 1888.

(No Model.) 2 eeeeeeeeeeee 2.

A. POULSON.

. TING ROD.

No. 387,444. Patented Aug. '7, 1888.

PATENT Trice.

ANDREW POULSON, OF ST. LOUIS, MISSOURI.

CONNECTING=ROD.

SPECIFICATION forming part of Letters Patent No. 387,444, dated August7, 1888.

Application filed April 20, 1888. Serial No. 271,332. (No model.)

To all whom, it may concern:

Be it known that I, ANDREW PoULsoN, a citizen of the United States,residing at St. Louis, in the State of Missouri, have invented certainnew and useful Improvements in Gonnecting-Rods for Locomotive and otherEngines; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to improvements in couplings of theconnecting-bars on locomotive and other engines, which will behereinafter more fully described, and pointed out in the claim.

In the accompanying drawings, forming part of this specification, Figure1 is a side view of three wheels of a locomotive-engine, showing thecouplings. Fig. 2 is a top view of the parts shown in Fig. 1. Fig. 3 isa side view of two wheels with the couplings. Figs. 4, 5, 6, 7, and 8are details of the coupling.

A, Fig. 7, is a collar having through its middle a square hole, a, andat one end a flange, a, Fig. 5.

B is a wrist-pin on the crank-arm B of each wheel to be coupled, and ismade square and to fit neatly the square hole a in the collar A. In Fig.2 the middle wheel has a wrist-pin twice the length of those on theoutside wheels. The connecting-bar G has on its outer ends couplings D,formed, as shown in Figs. 4. and 6, with hinge-j oints d. The lowersections, D, are integral parts of the bar 0, and the parts e of themare cylindrical and solid. The parts 6, connected to the halfring D, arecut down to half-cylinders, as shown in Fig. 6. The swinging half D ofthe coupling has at its loose end a half-cylinder to correspond with thehalf-cylinder on the bar 0, so that when the two halves are broughttogether they will form the continuation of the solid cylindrical part6. The half-cylinder c has on it a pin, f, and the other half-cylinderhas in its end a notch, f, to correspond with the pin f, so that whenthe two are closed, the pin f and notch f keep the pieces in place. Asliding sleeve, F, is neatly fitted to the cylindrical part c of eachcoupling, and is only one-half the length of the cylindrical part of thebar, so that when the coupling is to be opened for coupling oruncoupling, the sleeveF can be run onto the part 6, so that the hingedsection D can be lifted from the other part, c, as seen in Fig. 6. Thereis a longitudinal groove, 9, inside of the sleeve, and a pin, g, on thecylinder 6, so that the sleeve can slide over the pin; but when turnedto either side the pin 9' will lock the sleeve in its place, when thetwo sections D D are to be secured over the collar A. On top of theloose half D of the coupling there is an oil-cup for lubrication. Thecoupling D D is fitted to the collar A i nside of the flange a',and hasan enlargement, d, on one side, as seen in Figs. 4 and 6, to cover theedge of the flange a. The connecting-rod G extends from the end of thepiston-rod of the steam-cylinder, neither of which is shown in thedrawings. A softmetal box, A, cylindrical in form, is fitted on thecollar A of each coupling, as seen in section, Fig. 7, which is adiametrieal section of Fig. 5 on a; 00. The manner of connecting themiddle wheel in Figs. 1 and 2 with the connecting-bar is shown in Fig.8, where the top section of the coupling is not hinged, but has bothends alike and between two half-cylinders and a sleeve on each side ofthe coupling. The lower half ofthe coupling is formed in theconnecting-bar G, itself having on each side a cylindrical part and asleeve similar to the construction of the hinged coupling with the pinfand notch f and groove 9 and pin as heretofore described.

The collar A can be secured to the wristpin B in any practical manner,as it forms no part of this invention.

I claim- The wrist or crank pin of a locomotive or other engine wheel,of square form transversely, incombination with a cylindrical collarcovered with soft metal and a hinged coupling, constructed substantiallyas described.

In testimony whereof I affix my signature in presence of two witnesses.

ANDREW POULSON.

Witnesses:

THOS. H. YOUNG,

B. SINGLETON.

